PMID- 37710508
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230915
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 31
IP  - 16
DP  - 2023 Jul 31
TI  - Ultra-clean ternary Au/Ag/AgCl nanoclusters favoring cryogenic 
      temperature-boosted broadband SERS ultrasensitive detection.
PG  - 26474-26495
LID - 10.1364/OE.495426 [doi]
AB  - Exploring multifunctional surface-enhanced Raman scattering (SERS) substrates 
      with high sensitivity, broadband response property and reliable practicability 
      should be required for ultrasensitive molecular detection in complex 
      environments, which is heavily dependent on the photo-induced charge transfer 
      (PICT) efficiency realized on the desirable nano-architectures. Herein, we 
      introduce ultra-clean ternary Au/Ag/AgCl nanoclusters (NCs) with broadband 
      resonance crossing the visible light to near-infrared region created by one step 
      laser irradiation of mixed metal ion solution. Interestingly, the surface defects 
      and interaction among these unique cluster-like ternary nanostructures would be 
      further enhanced by thermal annealing treatment at 300 degrees C, providing higher 
      broadband SERS activities than the reference ternary nanoparticles under 457, 
      532, 633, 785, and 1064 nm wavelengths excitation. More importantly, the further 
      promoted SERS activities of the resultant Au/Ag/AgCl NCs with achievable  approximately 5-fold 
      enhancement than the initial one can be conventionally realized by simplistically 
      declining the temperature from normal 20 degrees C to cryogenic condition at about 
      -196 degrees C, due to the lower temperature-suppressed non-radiative recombination of 
      lattice thermal phonons and photogenerated electrons. The cryogenic 
      temperature-boosted SERS of the resultant Au/Ag/AgCl NCs enables the limit of 
      detection (LOD) of folic acid (FA) biomolecules to be achieved as low as 10(-12) 
      M, which is obviously better than that of 10(-9) M at room temperature condition. 
      Overall, the smart Au/Ag/AgCl NCs-based broadband SERS sensor provides a new 
      avenue for ultrasensitive biomolecular monitoring at cryogenic condition.
FAU - Xu, Linlin
AU  - Xu L
FAU - Chen, Ming
AU  - Chen M
FAU - Cui, Qingqiang
AU  - Cui Q
FAU - Wang, Chang
AU  - Wang C
FAU - Zhang, Mnegya
AU  - Zhang M
FAU - Zheng, Linqi
AU  - Zheng L
FAU - Li, Shuang
AU  - Li S
FAU - Zhang, Hua
AU  - Zhang H
FAU - Liang, Guangda
AU  - Liang G
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
SB  - IM
EDAT- 2023/09/15 06:42
MHDA- 2023/09/15 06:43
CRDT- 2023/09/15 01:13
PHST- 2023/09/15 06:43 [medline]
PHST- 2023/09/15 06:42 [pubmed]
PHST- 2023/09/15 01:13 [entrez]
AID - 535490 [pii]
AID - 10.1364/OE.495426 [doi]
PST - ppublish
SO  - Opt Express. 2023 Jul 31;31(16):26474-26495. doi: 10.1364/OE.495426.